French police said 109 people were in custody on Wednesday after violent May Day protests in Paris, correcting an earlier figure of 209 given by Interior Minister Gerard Collomb.

Hooded youths had torched a McDonald’s restaurant and several vehicles after joining the traditional May 1 union-led demonstration for workers’ rights.

Collomb, who gave the wrong figure in a television interview, promised to boost policing at future protests after facing accusations that the government had been caught unaware by 1,200 trouble-makers.

“For the next demonstrations there will be even more security forces, this time with the intention of totally separating protesters from those who have come to smash things up,” he told France 2 television.